Packaging bag



FIG. 1 is a perspective view of a packaging bag showing our new design;

FIG. 2 is a front view thereof, the rear view being an identical image thereto;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a right side elevational view thereof, the left side elevational view being an identical image thereto.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. The dot-dashed lines denote the boundary of the claim, and form no part of the claimed design. 

The ornamental design for a packaging bag, as shown and described. 